Compressing gases or vapors.



G. PAGEL.

UOMPRESSINU GASES OR VAPORS.

APPLICATION FILED MA1L9,1912.

Patented Nov. 24, 1914.

Invenbori Gushav Eagel .fittg.

\Mbnesses:

) ZZZ UNITED STATES 'HPATENT OFFICE.

GUSTAV PAGEL, 0F BERLIN, GERMANY, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A. CORPORATION OF NEW YORK.

COMPBESSING GASES 0R VAPORS.

Application flied March 9. 1912.

To all whom it may concern Be it known that I, GUSTAV PAoEL, a subject of the King of Prussia, residing at .Berlin, Germany, have invented certain new Jpressing or exhausting gases or vapors. In

such pumps, the gas or vapor to be compressed or exhausted may be fed or drawn to a rotary wheel or runner having buckets or vanes from which the air or other gas is thrown by centrifugal force. In order to efl'ect this action morepositively, water is also fed into said runner and is discharged by buckets or vanes across a suitable gap in the form of a series of slugs or pistons which entrain the gas between them and carry it through a series of passages formed in an annular directing ring or annulus concentric with the runner. he directing ring or annulus is preferably stationary. and it has been proposed to so shape the passages that the air or other gas or vapor will be compressed in passing through them to a common delivery pipe. But in this transformation of velocity into pressure under certain conditions the high frictional resistances caused by the large number of directing passages produces a poor eiticiency of the a paratus as a whole.

The OEJect of the present invention is to improve the efficiency of the pump by using the directing passages only for the purpose of dividing the air and water into alternate portions, and effecting the transformation of velocity into pressure outside the direct ing ring in a suitable pump casing. whereby of course considerably smaller frictional losses result than in the pumps heretofore known.

In the accompanying drawing, Figure 1 illustrates in cross section a pump embodying my invention, and Fig. 2 is a detail sectional view taken at right angles to the section shown in Fig. 1.

The rotary runner or impeller l is provided with concave buckets or vanes 2, and to the passages 3 formed between these buckets or vanes the auxiliary or throwing medium is supplied. The air or gas to be operated upon enters the interior of the concave buckets or vanes from one or both Specification of Letters Patent.

Patented Nov. 24, 1914.

Serial No. 682,750.

sides through ports or passages 4 located between the inner and outer ends of the impeller vanes. Centrifugal force throwsboth the water, or other throwing medium, and

the air, .or other gas, out from the ends of.- so

the passages at 1e periphery of the impeller into passages 5 formed by curved partitions 6 in astationary directing ring or annulus concentric with the runner 1. In

consequence of the rapid movement of thees runner past the inner ends of the passages 55, the streams of water and of the air to be acted on are interrupted, so that the air is broken up into portions which are included between slugs or pistons of water,r

the impeller and those in the annulus are provided with side walls to confine the fluid and gas between said vanes and thus form passages of definite area. Owing to the character of the view in Fig. 1, only the rear or back walls for this purpose are shown. As shown in Fig. 2, the dimensions of the passages 5 in a direction parallel to the axis of the pump are so related to the width of the buckets that the cross-section of the flow area of said passages is substantially uniform throughout their length. It will be noted that the size of the casing chamber gradually increases from one end to the other so as to afford s ace for the fluid and gas and at the same time decrease their velocity and increase their pressure.

In addition to the reduction of friction losses, as pointed out above, this construction has the further advantage that the directing passages can be made quite short,

so that the total dimensions of a pump em bodying this invention are considerably less than in other pumps of this kind.

In accordance with the provisions of the patent statutes, I have described the princi ple of operation of my invention, together with the apparatus which I now consider to re resent the best embodiment thereof; but desire to have it understood that the apparatus shown? is only illustrative and The transforma- 75 that the invention can he carried out by other means. i

J at I claim as new and desire to secure by Letters Patent of the United States, is:-

1. A centrifugal gas-compressing pump of the water-throwing type, provided with a directing ring or annulus in which no transformation of velocity into pressure occurs, and a surrounding spiral casing which increases in cross-sectional area toward the point of final discharge for effecting such transformation.

2. A centrifugal gas-compressing pump of the water-throwing type, provided with a directing ring or annulus having comparatively short passages in which no transformation of velocity into pressure occurs, and a surrounding spiral casing which increases in cross-sectional area toward the point of final discharge for effecting such transformation.

3. In a centrifugal compressor, the combination of an impeller having vanes which throw fluid outwardly by centrifu a1 force, ports for admitting the gas to e compressed to the passages between the vanes, an annulushavin vanes with passages between through which the fluid and gas flow, said vanes serving merely as directing devices, and a-surrounding spiral casing Which increases in crosssectional area toward the point of final discharge arranged to receive the fluid and air, decrease the velocity thereof and discharge the same.

4. In a throwing-water pump, the combination of an impeller, a directing ring surrounding the impeller and provided with passages having a substantially uniform ow area so that no transformation of velocity into pressure takes place in said passages, and a spiral casing which increases in cross-sectional area toward the point of final discharge surrounding the directing ring in which the velocity of the fluid is transformed into pressure.

In witness whereof, I have hereunto set myhand this 19 day of Februar 1912.

GUSTAV AGEL. Witnesses:

" G. HOLDSMANN,

M. BROCKMANN.

throw fluid outwardly by centrifu that the invention can. be carried out by othermeansfl. I I claim as new and desire to secure by Letters Patent of the United States,

1. A centrifugal gas-compressing pump of; the water-throwing type, prov-idednwith a directing ring or annulus in which -no 7 transformationof velocityinto pressure occurs, and a surrounding spiral "casing which increases in cross-sectional area toward the point of final discharge fo'r 'efiect'ing s'uch transformation.

'2. A centn'fugal gas-'cor'npressing pump [SEAL] Correction in LettersPatcntNo. 1,118,367.

pressed to the of the water-throwing type, provided with fmal dischar ring in whi'c 1914, upon the application of Gustav Pagel, of Berlin, Germany, i v a v I ment in Compressing Gases or Vapors, l cation requiringcorrection as follows:

read takes; and that the said Letters Patent pass ages between the vanes,

an annulushavin vanes with passages beft'ween through which the fluid and gas'flow,

said vanes serving merely as directing dev ioes,'gand a surrounding spiral casing which increases in cross-sectional area toward the point of final discharge arranged to receive the fluid and air, decrease the velocity thereof and discharge the same.

4. In a throwing-water pump, the combination ofan impellerfa directing rin surrounding the impeller and provided with passages having a substantially uniform flow area so that no transformation of velocity into pressure takes'place in said pas-"' which increases in sages, and a spiral casing cross-sectional area toward the point of e surrounding the directing I have hereunto of Februar 1912. I iAYiflG t-J It is hereby certified that in Letters Patent No. 1,118,367, granted November 24,

for an improvean error appears in the printed specifi- Page 1, line 76, for the Word taken should be read with this correction therein that the same may conform to the record of the case in thePatent Oflice.

Signed and sealed this,5th day of January, A. D., 1915.

R. F. WHITEHEAD,

Acting Oomwiisswner of Patents.

the velocity of the fluidis transformed into pressure. g r

set I Correction in Letters Patent No. 1,118,367.

ment in Compressing Gases 0r Vapors,

It is hereby certified that in Letters Patent No. 1,118,367. granted November 24, 1914, upon the application of Gustav Pagel, of Berlin, Germany, for an improvean error appears in the printed specification requiring correction as follows: Page 1, line 76, for the Word taken" read takes; and that the said Letters Patent should he read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 5th day of January, A. D., 1 915.

SEAL R. F. WHITEHEAD,

Acting Commissww of Patents. 

